X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/libsecurity_utilities/lib/fdsel.h diff --git a/libsecurity_utilities/lib/fdsel.h b/libsecurity_utilities/lib/fdsel.h deleted file mode 100644 index 87056b1c..00000000 --- a/libsecurity_utilities/lib/fdsel.h +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Copyright (c) 2000-2001,2003-2004 Apple Computer, Inc. All Rights Reserved. - * - * @APPLE_LICENSE_HEADER_START@ - * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER - * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, - * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and - * limitations under the License. - * - * @APPLE_LICENSE_HEADER_END@ - */ - - -// -// fdsel - select-style file descriptor set management -// -#ifndef _H_FDSEL -#define _H_FDSEL - -#include -#include -#include - - -namespace Security { -namespace UnixPlusPlus { - - -// -// An FDSet object maintains a single select(2) compatible bitmap. -// Size is implicitly kept by the caller (who needs to call grow() as -// needed, starting at zero). As long as this is done correctly, we are -// not bound by the FD_SETSIZE limit. -// An FDSet can self-copy for select(2) use; after that, the [] operator -// investigates the copy. -// -// Why are we using the FD_* macros even though we know these -// are fd_mask arrays? Some implementations use optimized assembly -// for these operations, and we want to pick those up. -// -// This whole mess is completely UNIX specific. If your system has -// the poll(2) system call, ditch this and use it. -// -class FDSet { -public: - FDSet() : mBits(NULL), mUseBits(NULL) { } - ~FDSet(); - - void grow(int oldWords, int newWords); - void set(int fd, bool on); - - fd_set *make(int words); - bool operator [] (int fd) const { return FD_ISSET(fd, (fd_set *)mUseBits); } - - inline static int words(int fd) { return (fd - 1) / NFDBITS + 1; } - -private: - fd_mask *mBits; // base bits - fd_mask *mUseBits; // mutable copy for select(2) - - void grow(fd_mask * &bits, int oldWords, int newWords); -}; - - -} // end namespace UnixPlusPlus -} // end namespace Security - - -#endif //_H_FDSEL